OK, let's work through this together. We're starting with 257 and we're going to multiply it by 491, which means we add 257 to itself 491 times.
Step 1: 0 + 257 = 257
Step 2: 257 + 257 = 514
Step 3: 514 + 257 = 771
Step 4: 771 + 257 = 1028
Step 5: 1028 + 257 = 1285
Step 6: 1285 + 257 = 1542
Step 7: 1542 + 257 = 1799
Step 8: 1799 + 257 = 2056
Step 9: 2056 + 257 = 2313
Step 10: 2313 + 257 = 2570
Step 11: 2570 + 257 = 2827
Step 12: 2827 + 257 = 3084
Step 13: 3084 + 257 = 3341
Step 14: 3341 + 257 = 3598
Step 15: 3598 + 257 = 3855
Step 16: 3855 + 257 = 4112
Step 17: 4112 + 257 = 4369
Step 18: 4369 + 257 = 4626
Step 19: 4626 + 257 = 4883
Step 20: 4883 + 257 = 5140
Step 21: 5140 + 257 = 5397
Step 22: 5397 + 257 = 5654
Step 23: 5654 + 257 = 5911
Step 24: 5911 + 257 = 6168
Step 25: 6168 + 257 = 6425
Step 26: 6425 + 257 = 6682
Step 27: 6682 + 257 = 6939
Step 28: 6939 + 257 = 7196
Step 29: 7196 + 257 = 7453
Step 30: 7453 + 257 = 7710
Step 31: 7710 + 257 = 7967
Step 32: 7967 + 257 = 8224
Step 33: 8224 + 257 = 8481
Step 34: 8481 + 257 = 8738
Step 35: 8738 + 257 = 8995
Step 36: 8995 + 257 = 9252
Step 37: 9252 + 257 = 9509
Step 38: 9509 + 257 = 9766
Step 39: 9766 + 257 = 10023
Step 40: 10023 + 257 = 10280
Step 41: 10280 + 257 = 10537
Step 42: 10537 + 257 = 10794
Step 43: 10794 + 257 = 11051
Step 44: 11051 + 257 = 11308
Step 45: 11308 + 257 = 11565
Step 46: 11565 + 257 = 11822
Step 47: 11822 + 257 = 12079
Step 48: 12079 + 257 = 12336
Step 49: 12336 + 257 = 12593
Step 50: 12593 + 257 = 12850
Step 51: 12850 + 257 = 13107
Step 52: 13107 + 257 = 13364
Step 53: 13364 + 257 = 13621
Step 54: 13621 + 257 = 13878
Step 55: 13878 + 257 = 14135
Step 56: 14135 + 257 = 14392
Step 57: 14392 + 257 = 14649
Step 58: 14649 + 257 = 14906
Step 59: 14906 + 257 = 15163
Step 60: 15163 + 257 = 15420
Step 61: 15420 + 257 = 15677
Step 62: 15677 + 257 = 15934
Step 63: 15934 + 257 = 16191
Step 64: 16191 + 257 = 16448
Step 65: 16448 + 257 = 16705
Step 66: 16705 + 257 = 16962
Step 67: 16962 + 257 = 17219
Step 68: 17219 + 257 = 17476
Step 69: 17476 + 257 = 17733
Step 70: 17733 + 257 = 17990
Step 71: 17990 + 257 = 18247
Step 72: 18247 + 257 = 18504
Step 73: 18504 + 257 = 18761
Step 74: 18761 + 257 = 19018
Step 75: 19018 + 257 = 19275
Step 76: 19275 + 257 = 19532
Step 77: 19532 + 257 = 19789
Step 78: 19789 + 257 = 20046
Step 79: 20046 + 257 = 20303
Step 80: 20303 + 257 = 20560
Step 81: 20560 + 257 = 20817
Step 82: 20817 + 257 = 21074
Step 83: 21074 + 257 = 21331
Step 84: 21331 + 257 = 21588
Step 85: 21588 + 257 = 21845
Step 86: 21845 + 257 = 22102
Step 87: 22102 + 257 = 22359
Step 88: 22359 + 257 = 22616
Step 89: 22616 + 257 = 22873
Step 90: 22873 + 257 = 23130
Step 91: 23130 + 257 = 23387
Step 92: 23387 + 257 = 23644
Step 93: 23644 + 257 = 23901
Step 94: 23901 + 257 = 24158
Step 95: 24158 + 257 = 24415
Step 96: 24415 + 257 = 24672
Step 97: 24672 + 257 = 24929
Step 98: 24929 + 257 = 25186
Step 99: 25186 + 257 = 25443
Step 100: 25443 + 257 = 25700
Step 101: 25700 + 257 = 25957
Step 102: 25957 + 257 = 26214
Step 103: 26214 + 257 = 26471
Step 104: 26471 + 257 = 26728
Step 105: 26728 + 257 = 26985
Step 106: 26985 + 257 = 27242
Step 107: 27242 + 257 = 27499
Step 108: 27499 + 257 = 27756
Step 109: 27756 + 257 = 28013
Step 110: 28013 + 257 = 28270
Step 111: 28270 + 257 = 28527
Step 112: 28527 + 257 = 28784
Step 113: 28784 + 257 = 29041
Step 114: 29041 + 257 = 29298
Step 115: 29298 + 257 = 29555
Step 116: 29555 + 257 = 29812
Step 117: 29812 + 257 = 30069
Step 118: 30069 + 257 = 30326
Step 119: 30326 + 257 = 30583
Step 120: 30583 + 257 = 30840
Step 121: 30840 + 257 = 31097
Step 122: 31097 + 257 = 31354
Step 123: 31354 + 257 = 31611
Step 124: 31611 + 257 = 31868
Step 125: 31868 + 257 = 32125
Step 126: 32125 + 257 = 32382
Step 127: 32382 + 257 = 32639
Step 128: 32639 + 257 = 32896
Step 129: 32896 + 257 = 33153
Step 130: 33153 + 257 = 33410
Step 131: 33410 + 257 = 33667
Step 132: 33667 + 257 = 33924
Step 133: 33924 + 257 = 34181
Step 134: 34181 + 257 = 34438
Step 135: 34438 + 257 = 34695
Step 136: 34695 + 257 = 34952
Step 137: 34952 + 257 = 35209
Step 138: 35209 + 257 = 35466
Step 139: 35466 + 257 = 35723
Step 140: 35723 + 257 = 35980
Step 141: 35980 + 257 = 36237
Step 142: 36237 + 257 = 36494
Step 143: 36494 + 257 = 36751
Step 144: 36751 + 257 = 37008
Step 145: 37008 + 257 = 37265
Step 146: 37265 + 257 = 37522
Step 147: 37522 + 257 = 37779
Step 148: 37779 + 257 = 38036
Step 149: 38036 + 257 = 38293
Step 150: 38293 + 257 = 38550
Step 151: 38550 + 257 = 38807
Step 152: 38807 + 257 = 39064
Step 153: 39064 + 257 = 39321
Step 154: 39321 + 257 = 39578
Step 155: 39578 + 257 = 39835
Step 156: 39835 + 257 = 40092
Step 157: 40092 + 257 = 40349
Step 158: 40349 + 257 = 40606
Step 159: 40606 + 257 = 40863
Step 160: 40863 + 257 = 41120
Step 161: 41120 + 257 = 41377
Step 162: 41377 + 257 = 41634
Step 163: 41634 + 257 = 41891
Step 164: 41891 + 257 = 42148
Step 165: 42148 + 257 = 42405
Step 166: 42405 + 257 = 42662
Step 167: 42662 + 257 = 42919
Step 168: 42919 + 257 = 43176
Step 169: 43176 + 257 = 43433
Step 170: 43433 + 257 = 43690
Step 171: 43690 + 257 = 43947
Step 172: 43947 + 257 = 44204
Step 173: 44204 + 257 = 44461
Step 174: 44461 + 257 = 44718
Step 175: 44718 + 257 = 44975
Step 176: 44975 + 257 = 45232
Step 177: 45232 + 257 = 45489
Step 178: 45489 + 257 = 45746
Step 179: 45746 + 257 = 46003
Step 180: 46003 + 257 = 46260
Step 181: 46260 + 257 = 46517
Step 182: 46517 + 257 = 46774
Step 183: 46774 + 257 = 47031
Step 184: 47031 + 257 = 47288
Step 185: 47288 + 257 = 47545
Step 186: 47545 + 257 = 47802
Step 187: 47802 + 257 = 48059
Step 188: 48059 + 257 = 48316
Step 189: 48316 + 257 = 48573
Step 190: 48573 + 257 = 48830
Step 191: 48830 + 257 = 49087
Step 192: 49087 + 257 = 49344
Step 193: 49344 + 257 = 49601
Step 194: 49601 + 257 = 49858
Step 195: 49858 + 257 = 50115
Step 196: 50115 + 257 = 50372
Step 197: 50372 + 257 = 50629
Step 198: 50629 + 257 = 50886
Step 199: 50886 + 257 = 51143
Step 200: 51143 + 257 = 51400
Step 201: 51400 + 257 = 51657
Step 202: 51657 + 257 = 51914
Step 203: 51914 + 257 = 52171
Step 204: 52171 + 257 = 52428
Step 205: 52428 + 257 = 52685
Step 206: 52685 + 257 = 52942
Step 207: 52942 + 257 = 53199
Step 208: 53199 + 257 = 53456
Step 209: 53456 + 257 = 53713
Step 210: 53713 + 257 = 53970
Step 211: 53970 + 257 = 54227
Step 212: 54227 + 257 = 54484
Step 213: 54484 + 257 = 54741
Step 214: 54741 + 257 = 54998
Step 215: 54998 + 257 = 55255
Step 216: 55255 + 257 = 55512
Step 217: 55512 + 257 = 55769
Step 218: 55769 + 257 = 56026
Step 219: 56026 + 257 = 56283
Step 220: 56283 + 257 = 56540
Step 221: 56540 + 257 = 56797
Step 222: 56797 + 257 = 57054
Step 223: 57054 + 257 = 57311
Step 224: 57311 + 257 = 57568
Step 225: 57568 + 257 = 57825
Step 226: 57825 + 257 = 58082
Step 227: 58082 + 257 = 58339
Step 228: 58339 + 257 = 58596
Step 229: 58596 + 257 = 58853
Step 230: 58853 + 257 = 59110
Step 231: 59110 + 257 = 59367
Step 232: 59367 + 257 = 59624
Step 233: 59624 + 257 = 59881
Step 234: 59881 + 257 = 60138
Step 235: 60138 + 257 = 60395
Step 236: 60395 + 257 = 60652
Step 237: 60652 + 257 = 60909
Step 238: 60909 + 257 = 61166
Step 239: 61166 + 257 = 61423
Step 240: 61423 + 257 = 61680
Step 241: 61680 + 257 = 61937
Step 242: 61937 + 257 = 62194
Step 243: 62194 + 257 = 62451
Step 244: 62451 + 257 = 62708
Step 245: 62708 + 257 = 62965
Step 246: 62965 + 257 = 63222
Step 247: 63222 + 257 = 63479
Step 248: 63479 + 257 = 63736
Step 249: 63736 + 257 = 63993
Step 250: 63993 + 257 = 64250
Step 251: 64250 + 257 = 64507
Step 252: 64507 + 257 = 64764
Step 253: 64764 + 257 = 65021
Step 254: 65021 + 257 = 65278
Step 255: 65278 + 257 = 65535
Step 256: 65535 + 257 = 65792
Step 257: 65792 + 257 = 66049
Step 258: 66049 + 257 = 66306
Step 259: 66306 + 257 = 66563
Step 260: 66563 + 257 = 66820
Step 261: 66820 + 257 = 67077
Step 262: 67077 + 257 = 67334
Step 263: 67334 + 257 = 67591
Step 264: 67591 + 257 = 67848
Step 265: 67848 + 257 = 68105
Step 266: 68105 + 257 = 68362
Step 267: 68362 + 257 = 68619
Step 268: 68619 + 257 = 68876
Step 269: 68876 + 257 = 69133
Step 270: 69133 + 257 = 69390
Step 271: 69390 + 257 = 69647
Step 272: 69647 + 257 = 69904
Step 273: 69904 + 257 = 70161
Step 274: 70161 + 257 = 70418
Step 275: 70418 + 257 = 70675
Step 276: 70675 + 257 = 70932
Step 277: 70932 + 257 = 71189
Step 278: 71189 + 257 = 71446
Step 279: 71446 + 257 = 71703
Step 280: 71703 + 257 = 71960
Step 281: 71960 + 257 = 72217
Step 282: 72217 + 257 = 72474
Step 283: 72474 + 257 = 72731
Step 284: 72731 + 257 = 72988
Step 285: 72988 + 257 = 73245
Step 286: 73245 + 257 = 73502
Step 287: 73502 + 257 = 73759
Step 288: 73759 + 257 = 74016
Step 289: 74016 + 257 = 74273
Step 290: 74273 + 257 = 74530
Step 291: 74530 + 257 = 74787
Step 292: 74787 + 257 = 75044
Step 293: 75044 + 257 = 75301
Step 294: 75301 + 257 = 75558
Step 295: 75558 + 257 = 75815
Step 296: 75815 + 257 = 76072
Step 297: 76072 + 257 = 76329
Step 298: 76329 + 257 = 76586
Step 299: 76586 + 257 = 76843
Step 300: 76843 + 257 = 77100
Step 301: 77100 + 257 = 77357
Step 302: 77357 + 257 = 77614
Step 303: 77614 + 257 = 77871
Step 304: 77871 + 257 = 78128
Step 305: 78128 + 257 = 78385
Step 306: 78385 + 257 = 78642
Step 307: 78642 + 257 = 78899
Step 308: 78899 + 257 = 79156
Step 309: 79156 + 257 = 79413
Step 310: 79413 + 257 = 79670
Step 311: 79670 + 257 = 79927
Step 312: 79927 + 257 = 80184
Step 313: 80184 + 257 = 80441
Step 314: 80441 + 257 = 80698
Step 315: 80698 + 257 = 80955
Step 316: 80955 + 257 = 81212
Step 317: 81212 + 257 = 81469
Step 318: 81469 + 257 = 81726
Step 319: 81726 + 257 = 81983
Step 320: 81983 + 257 = 82240
Step 321: 82240 + 257 = 82497
Step 322: 82497 + 257 = 82754
Step 323: 82754 + 257 = 83011
Step 324: 83011 + 257 = 83268
Step 325: 83268 + 257 = 83525
Step 326: 83525 + 257 = 83782
Step 327: 83782 + 257 = 84039
Step 328: 84039 + 257 = 84296
Step 329: 84296 + 257 = 84553
Step 330: 84553 + 257 = 84810
Step 331: 84810 + 257 = 85067
Step 332: 85067 + 257 = 85324
Step 333: 85324 + 257 = 85581
Step 334: 85581 + 257 = 85838
Step 335: 85838 + 257 = 86095
Step 336: 86095 + 257 = 86352
Step 337: 86352 + 257 = 86609
Step 338: 86609 + 257 = 86866
Step 339: 86866 + 257 = 87123
Step 340: 87123 + 257 = 87380
Step 341: 87380 + 257 = 87637
Step 342: 87637 + 257 = 87894
Step 343: 87894 + 257 = 88151
Step 344: 88151 + 257 = 88408
Step 345: 88408 + 257 = 88665
Step 346: 88665 + 257 = 88922
Step 347: 88922 + 257 = 89179
Step 348: 89179 + 257 = 89436
Step 349: 89436 + 257 = 89693
Step 350: 89693 + 257 = 89950
Step 351: 89950 + 257 = 90207
Step 352: 90207 + 257 = 90464
Step 353: 90464 + 257 = 90721
Step 354: 90721 + 257 = 90978
Step 355: 90978 + 257 = 91235
Step 356: 91235 + 257 = 91492
Step 357: 91492 + 257 = 91749
Step 358: 91749 + 257 = 92006
Step 359: 92006 + 257 = 92263
Step 360: 92263 + 257 = 92520
Step 361: 92520 + 257 = 92777
Step 362: 92777 + 257 = 93034
Step 363: 93034 + 257 = 93291
Step 364: 93291 + 257 = 93548
Step 365: 93548 + 257 = 93805
Step 366: 93805 + 257 = 94062
Step 367: 94062 + 257 = 94319
Step 368: 94319 + 257 = 94576
Step 369: 94576 + 257 = 94833
Step 370: 94833 + 257 = 95090
Step 371: 95090 + 257 = 95347
Step 372: 95347 + 257 = 95604
Step 373: 95604 + 257 = 95861
Step 374: 95861 + 257 = 96118
Step 375: 96118 + 257 = 96375
Step 376: 96375 + 257 = 96632
Step 377: 96632 + 257 = 96889
Step 378: 96889 + 257 = 97146
Step 379: 97146 + 257 = 97403
Step 380: 97403 + 257 = 97660
Step 381: 97660 + 257 = 97917
Step 382: 97917 + 257 = 98174
Step 383: 98174 + 257 = 98431
Step 384: 98431 + 257 = 98688
Step 385: 98688 + 257 = 98945
Step 386: 98945 + 257 = 99202
Step 387: 99202 + 257 = 99459
Step 388: 99459 + 257 = 99716
Step 389: 99716 + 257 = 99973
Step 390: 99973 + 257 = 100230
Step 391: 100230 + 257 = 100487
Step 392: 100487 + 257 = 100744
Step 393: 100744 + 257 = 101001
Step 394: 101001 + 257 = 101258
Step 395: 101258 + 257 = 101515
Step 396: 101515 + 257 = 101772
Step 397: 101772 + 257 = 102029
Step 398: 102029 + 257 = 102286
Step 399: 102286 + 257 = 102543
Step 400: 102543 + 257 = 102800
Step 401: 102800 + 257 = 103057
Step 402: 103057 + 257 = 103314
Step 403: 103314 + 257 = 103571
Step 404: 103571 + 257 = 103828
Step 405: 103828 + 257 = 104085
Step 406: 104085 + 257 = 104342
Step 407: 104342 + 257 = 104599
Step 408: 104599 + 257 = 104856
Step 409: 104856 + 257 = 105113
Step 410: 105113 + 257 = 105370
Step 411: 105370 + 257 = 105627
Step 412: 105627 + 257 = 105884
Step 413: 105884 + 257 = 106141
Step 414: 106141 + 257 = 106398
Step 415: 106398 + 257 = 106655
Step 416: 106655 + 257 = 106912
Step 417: 106912 + 257 = 107169
Step 418: 107169 + 257 = 107426
Step 419: 107426 + 257 = 107683
Step 420: 107683 + 257 = 107940
Step 421: 107940 + 257 = 108197
Step 422: 108197 + 257 = 108454
Step 423: 108454 + 257 = 108711
Step 424: 108711 + 257 = 108968
Step 425: 108968 + 257 = 109225
Step 426: 109225 + 257 = 109482
Step 427: 109482 + 257 = 109739
Step 428: 109739 + 257 = 109996
Step 429: 109996 + 257 = 110253
Step 430: 110253 + 257 = 110510
Step 431: 110510 + 257 = 110767
Step 432: 110767 + 257 = 111024
Step 433: 111024 + 257 = 111281
Step 434: 111281 + 257 = 111538
Step 435: 111538 + 257 = 111795
Step 436: 111795 + 257 = 112052
Step 437: 112052 + 257 = 112309
Step 438: 112309 + 257 = 112566
Step 439: 112566 + 257 = 112823
Step 440: 112823 + 257 = 113080
Step 441: 113080 + 257 = 113337
Step 442: 113337 + 257 = 113594
Step 443: 113594 + 257 = 113851
Step 444: 113851 + 257 = 114108
Step 445: 114108 + 257 = 114365
Step 446: 114365 + 257 = 114622
Step 447: 114622 + 257 = 114879
Step 448: 114879 + 257 = 115136
Step 449: 115136 + 257 = 115393
Step 450: 115393 + 257 = 115650
Step 451: 115650 + 257 = 115907
Step 452: 115907 + 257 = 116164
Step 453: 116164 + 257 = 116421
Step 454: 116421 + 257 = 116678
Step 455: 116678 + 257 = 116935
Step 456: 116935 + 257 = 117192
Step 457: 117192 + 257 = 117449
Step 458: 117449 + 257 = 117706
Step 459: 117706 + 257 = 117963
Step 460: 117963 + 257 = 118220
Step 461: 118220 + 257 = 118477
Step 462: 118477 + 257 = 118734
Step 463: 118734 + 257 = 118991
Step 464: 118991 + 257 = 119248
Step 465: 119248 + 257 = 119505
Step 466: 119505 + 257 = 119762
Step 467: 119762 + 257 = 120019
Step 468: 120019 + 257 = 120276
Step 469: 120276 + 257 = 120533
Step 470: 120533 + 257 = 120790
Step 471: 120790 + 257 = 121047
Step 472: 121047 + 257 = 121304
Step 473: 121304 + 257 = 121561
Step 474: 121561 + 257 = 121818
Step 475: 121818 + 257 = 122075
Step 476: 122075 + 257 = 122332
Step 477: 122332 + 257 = 122589
Step 478: 122589 + 257 = 122846
Step 479: 122846 + 257 = 123103
Step 480: 123103 + 257 = 123360
Step 481: 123360 + 257 = 123617
Step 482: 123617 + 257 = 123874
Step 483: 123874 + 257 = 124131
Step 484: 124131 + 257 = 124388
Step 485: 124388 + 257 = 124645
Step 486: 124645 + 257 = 124902
Step 487: 124902 + 257 = 125159
Step 488: 125159 + 257 = 125416
Step 489: 125416 + 257 = 125673
Step 490: 125673 + 257 = 125930
Step 491: 125930 + 257 = 126187

So, 257*491 = 126187